<template>
    <transition name="move">
        <div v-show="showFlag" class="food" ref="food">
            <ul>
                <div class="food-content">
                <div class="image-header">
                    <img :src="food.image">
                    <div class="back" @click="hide">
                        <i class="icon-arrow_lift"></i>
                    </div>
                </div>
                <div class="content">
                    <h1 class="title">{{ food.name }}</h1>
                    <div class="detail">
                        <span class="sell-count">月售{{ food.sellCount }}</span>
                        <span class="rating">好评率{{ food.rating }}%</span>
                    </div>
                    <div class="price">
                        <span class="now">￥{{ food.price }}</span><span class="old" v-show="food.oldPrice">￥{{ food.oldPrice }}</span>
                    </div>
                    <div class="cartcontrol-wrapper">
                        <cartcontrol @cart-add="addFood" :food="food"></cartcontrol>
                    </div>
                    <transition name="buy">
                        <div class="buy" v-show="!food.count || food.count===0" @click.stop.prevent="addFirst">加入购物车
                        </div>
                    </transition>
                    </div>
                </div>
                <split v-show="food.info"></split>
                <div class="info" v-show="food.info">
                    <h1 class="title">商品介绍</h1>
                    <p class="text">{{ food.info }}</p>
                </div>
                <split></split>
                <div class="rating">
                    <h1 class="title">商品评价</h1>
                    <ratingselect :select-type="selectType" :only-content="onlyContent" :desc="desc" :ratings="food.ratings" @change="change" @toggle="toggle"></ratingselect>
                    <div class="rating-wrapper">
                        <ul v-show="food.ratings && food.ratings.length">
                            <li v-show="needShow(rating.rateType,rating.text)" v-for="rating in food.ratings"  :key="rating.id" class="rating-item border-1px">
                                <div class="user">
                                    <span class="name">{{ rating.username }}</span>
                                    <img class="avatar" width="12" height="12" :src="rating.avatar">
                                </div>
                                <div class="time">{{ formatDate(rating.rateTime) }}</div>
                                <p class="text">
                                    <span :class="{'icon-thumb_up':rating.rateType===0,'icon-thumb_down':rating.rateType===1}"></span>{{ rating.text }}
                                </p>
                            </li>
                        </ul>
                        <div class="no-rating" v-show="!food.ratings || !food.ratings.length">暂无评价</div>
                    </div>
                </div>
            </ul>
        </div>
    </transition>
</template>

<script>
import BScroll from 'better-scroll'
import Vue from 'vue'
import cartcontrol from '../cartconcontrol/cartcontrol.vue'
import ratingselect from '../ratingselect/ratingselect.vue'
import split from '../split/split.vue'

var POSITIVE = 0
var NEGATIVE = 1
var ALL = 2
export default {
    props: {
        food: {
            type: Object
        }
    },
    data() {
        return {
            showFlag: false,
            selectType: ALL,
            onlyContent: true,
            desc: {
                all: '全部',
                positive: '推荐',
                negative: '吐槽'
            }
        }
    },
    methods: {
        show(){
            this.showFlag = true,
            this.selectType = ALL,
            this.onlyContent = true,
            this.$nextTick(() => {
                if(!this.scroll){
                    this.scroll = new BScroll(this.$refs.food,{
                        click: true
                    })
                }else{
                    this.scroll.refresh()
                }
            })
        },
        hide(){
            this.showFlag = !this.showFlag
        },
        addFirst(event){
            if(!event._constructed){
                return
            }
            Vue.set(this.food,'count',1)
            this.$emit('cart-add',event.target)
        },
        addFood(target){
            this.$emit('cart-add',target)
        },
        change(type){
            this.selectType = type
        },
        toggle(val){
            this.onlyContent = val
        },
        needShow(type,text){
            if(this.onlyContent && !text){
                return false
            }
            if(this.selectType === ALL){
                return true
            }else{
                return type === this.selectType
            }
        },
        formatDate(time) {
            // 时间格式
            var fmt = 'yyyy-MM-dd hh:mm'
            // 转为Date对象
            var date = new Date(time)
            // 正则匹配，并替换
            if(/(y+)/.test(fmt)) { // 年
                // RegExp.$1获取到正则对应的第一个元素yyyy
                var year = date.getFullYear() + ''
                fmt = fmt.replace(RegExp.$1, year)
            }
            if(/(M+)/.test(fmt)) { // 月
                var month = date.getMonth() + 1
                if(month < 10) {
                    month = '0' + month
                }
                fmt = fmt.replace(RegExp.$1, month)
            }
            if(/(d+)/.test(fmt)) { // 日
                var mydate = date.getDate() + ''
                if(mydate < 10) {
                    mydate = '0' + mydate
                }
                fmt = fmt.replace(RegExp.$1, mydate)
            }
            if(/(h+)/.test(fmt)) { // 时
                var hours = date.getHours() + ''
                if(hours < 10) {
                    hours = '0' + hours
                }
                fmt = fmt.replace(RegExp.$1, hours)
            }
            if(/(m+)/.test(fmt)) { // 分
                var minu = date.getMinutes() + ''
                if(minu < 10) {
                    minu = '0' + minu
                }
                fmt = fmt.replace(RegExp.$1, minu)
            }
            return fmt
        }
    },
    events: {
        'change'(type){
            this.selectType = type
            this.$nextTick(() => {
                this.scroll.refresh()
            })
        },
        'toggle'(onlyContent){
            this.onlyContent = onlyContent
            this.$nextTick(() => {
                this.scroll.refresh()
            })
        }
    },
    components: {
        'cartcontrol': cartcontrol,
        'split': split,
        'ratingselect': ratingselect
    }
}
</script>

<style lang="stylus" rel="stylesheet/stylus">
    @import "../../common/stylus/mixin.styl"
    .food
        position: fixed
        left: 0
        top: 0
        bottom: 48px
        z-index: 30
        width: 100%
        background: #fff
        transform: translate3d(0, 0, 0)
        &.move-enter-active, &.move-leave-active
            transition: all 0.2s linear
            transform: translate3d(0, 0, 0)
        &.move-enter, &.move-leave-active
            opacity: 0
            transform: translate3d(100%, 0, 0)
    .image-header
        position: relative
        width: 100%
        height: 0
        padding-top: 100%
        img 
            position: absolute
            top: 0
            left: 0
            width: 100%
            height: 100%
        .back
            position: absolute
            top: 10px
            left: 0
            .icon-arrow_lift
                display: block
                padding: 10px
                font-size: 20px
                color: #fff
    .content
        position: relative
        .title
            line-height: 14px
            margin-top: 18px
            margin-left: 18px
            margin-bottom: 8px
            font-size: 14px
            font-weight: 700
            color: rgb(7,17,27)
        .detail
            margin-left: 18px
            margin-bottom: 10px
            line-height: 10px
            height: 10px
            font-size: 0
            .sell-count,.rating
                font-size: 10px
                color: rgb(147,153,159)
            .sell-count
                margin-right: 12px
        .price
            margin-left: 18px
            font-weight: 700
            line-height: 24px
            .now
                margin-right: 8px
                font-size: 14px
                color: rgb(240,20,20)
            .old
                text-decoration: line-through
                font-size: 10px
                color: rgb(147,153,159)
        .cartcontrol-wrapper
            position: absolute
            right: 12px
            bottom: 0
        .buy
            position: absolute
            right: 18px
            bottom: 5px
            z-index: 10
            height: 24px
            line-height: 24px
            padding: 0 12px
            box-sizing: border-box
            border-radius: 12px
            font-size: 10px
            color: #fff
            background: rgb(0,160,220)
            opacity: 1 
            &.buy-enter-active, &.buy-leave-active 
                transition: all 0.3s
                opacity: 1    
            &.buy-enter, &.buy-leave-active 
                opacity: 0
    .info
        padding: 18px
        .title
            line-height: 14px
            margin-bottom: 6px
            font-size: 14px
            font-weight: bold
            color: rgb(7,17,27)
        .text
            line-height: 24px
            font-size: 12px
            color: rgb(77,85,93)
    .rating
        padding-top: 18px
        .title
            line-height: 14px
            margin-left: 18px
            margin-bottom: 6px
            font-size: 14px
            font-weight: bold
            color: rgb(7,17,27)
        .rating-wrapper
            padding: 0 18px
            .rating-item
                position: relative
                padding: 16px 0
                border-1px(rgba(7,17,27,0.1))
                .user
                    position: absolute
                    right: 0
                    top: 16px
                    line-height: 12px
                    font-size: 0
                    .name
                        display: inline-block
                        vertical-align: top
                        margin-right: 6px
                        font-size: 10px
                        color: rgb(147,153,159)
                    .avatar
                        border-radius: 50%
                .time
                    margin-bottom: 6px 
                    line-height: 12px
                    font-size: 10px
                    color: rgb(147,153,159)
                .text
                    line-height: 16px
                    font-size: 12px
                    color: rgb(7,17,27)
                    .icon-thumb_up,.icon-thumb_down
                        margin-right: 4px
                        line-height: 16px
                        font-size: 12px
                    .icon-thumb_up
                        color: rgb(0,160,220)
                    .icon-thumb_down
                        color: rgb(147,153,159)
            .no-rating
                padding: 16px 0
                font-size: 12px
                color: rgb(147,153,159)        
</style>